The M767ST from New Balance features an abzorb heel. Forefoot and strobel board. New Balances top of the line foam material has excellent cushioning and compression. The M767ST also has Stability Web which is a structured light weight arch support that provides optimal rigidity preventing midfoot flex. Acteva midsole is superior light weight foam that has exceptional durability. Made with dupont engage and isoprene rubber. 12 Percent lighter than standard foam. TS2 transitional support system. Multi-density medial support creates a smooth transition from heel strike to toe-off. N Lock dual-rubber outsole. Sure lace dual-density collar. Ndurance. Water-Resistant air mesh backer.